He was given an important task.

他被委以重任。

This is an important task which the people have entrusted to us.

这是人民赋予我们的重任。

Have a very important task to do.

要集中完成重要任务。

The most important task for us now is to manage our own things well.

当前，最重要的是把自己的事情办好。

I limit myself to working on only the most important task every morning.

我每天早上限制自己只为最重要的任务工作。